Carrier for photographic plates and films



G'. D. PAPPAJION CARRIER FOR PHOTOGRAPHIC PLATES AND FILMS July 27,1937.

Filed Feb. 19, 1936 @Il @Il IN V EN TOR.

A TTORNEYS.

Patented July 27, 1937 UNITED STS CARRIER FOR PHOTOGRAPHIC PLATES ANDFLMS 6 Claims.

This invention relates to an improved hanger by means of which aphotographic plate or film may be suspended in a tank or equivalentcontainer filled with developing fluid and one object of the inventionis to provide a device of this character having the form` of an openframe adapted to nt about marginal portions of a plate or lm with bothfaces of the plate or nlm eX- posed so that they may be acted, upon bythe developing fluid when the frame is suspended in a developing tank.

Another object of the invention is to so form the frame that while aplate or film may be easily fitted into the frame, it will be preventedfrom accidentally slipping out of place and thus eliminate likelihood ofa plate dropping upon a floor or workbench and becoming broken andlikewise eliminating likehood of a wet film dropping upon the floor orworkbench where it will be soiled by dust, dirt and other foreignmatter.

Another object of the invention is to provide a frame of this characterwhich may be formed of companion sections fused or otherwise firmlysecured to each other so that all portions of the frame will bepermanently united and thus prevented from separating and allowing aplate or film to drop out of the frame.

Another object of the invention is the provision of a frame which may beformed of blown Celluloid, thus producing a frame which will be of lightweight but of sufficient strength to carry a plate or film` and not beliable to be damaged by the action of acid in the developing fluid.

The invention is illustrated in the accompanying drawing, wherein:-

Figure 1 is a view showing a plate and film carrier of the improvedconstruction suspended in a developing tank shown in section.

Figure 2 is a view in elevation looking at the improved frame from theright of Figure 1.

Figure 3 is a View in elevation looking at the opposite face of theframe from that shown in Figure 1.

Figure 4 is a sectional view taken vertically along the line 4--4 ofFigure l.

Figure 5 is a sectional view taken horizontally through the frame, alongthe line 5-5 of Figure 1.

Figure 6 is a fragmentary perspective view of a corner portion of theframe, and

Figure 7 is a fragmentary perspective view of the intermediate portionof one end portion of the frame.

This improved carrier for a photographic plate or lm is in the form of aframe having upper and lower bars I and 2 connected by end bars orstrips ii and il. Marginal portions of the upper and lower bars and sideor end bar are projected forwardly to form flanges 5 which defineshoulders e for engagement by marginal edges of a photographic plate orfilm mounted in the frame. rlhese flanges also serve as carriers forfacing strips l, il, El and i@ and upon referring to Figures l and 5 itwill be seen that portions of the facing strips project inwardly beyondthe flanges in spaced relation to inner marginal portions of the sideand end bars of the frame and, together therewith., denne a channelextending about the inner periphery of the frame to receive marginalportions of a plate or film. The facing strips l',

t and 9 are each of an even width throughout its length but the spacingstrip it has extensions or arms il projecting inwardly relative to theframe so that the side extensions or arms il may be secured against theflanges of the upper and lower bars of the frame and firmly mount thefacing strip iu in spaced relation to the side bar 3 of the frame forpractically the entire length thereof and denne an entrance slot orpassage l?. through which a photographic plate or nlm is passed into theframe. Ribs lil and lll are formed upon confronting faces of the end bar3 and facing strip lll, and upon referring to Figures 2 and 6 it will beseen that these ribs are gradually reduced in thickness towards theirinner ends and are of less width than the end bar and facing strip. Byhaving the ribs gradually reduced in thiclmess towards their inner ends,a photographic plate may be easily forced inwardly through the passagel2 having a corner portion first thrust inwardly between the inner endsof the ribs and tilting movement then imparted to the plate to disposeit in proper alinement with the frame and exert force which will springthe facing strip l@ away from the end bar of the frame. Pressure maythen be applied to the plate to force it inwardly of the frame and fullyinto the frame. As the plate moves inwardly out of engagement with thesloping faces of the ribs i3, the facing strip lil returns to its normalposition in which it is parallel to the end bar 3 and the ribs willserve as abutments to prevent the plate from accidentally slipping outof the frame. The facing strip and end bar may, however, be sprung aparta sufcient distance to permit removal of the plate after it has beendeveloped. As additional means for preventing the plate fromaccidentally slipping out of the frame through the passage B2, the endbar 3 and the facing strip l are struck from their outer marginal sideedges intermediate their ends, as shown at I5, to form ears i6 which areundercut at their ends and serve as cleats to receive a binder, such asa rubber band or piece of string. The cleats or ears and theintermediate portions of the end bar and facing strip will be drawntoward each other when the rubber band or string is wound about the earsand the facing strip and end bar of the frame will have bindingengagment with the portion of the photographic plate disposed betweenthem. It should also be noted that portions of the 'rubber band orstring extend across the space between the end bar and facing strip, asclearly shown in Figure 2, and will serve very effectively as a barrierto prevent outward movement of the photographic plate. Slots I 8 and I9are formed in the bars l, and 3 of the frame and the facing strips i',fi, and 9 carried thereby to permit the bordering channel to be easilycleared of sediment. Grooves and 2| are formed in outer faces of theside and end bars of the frame and the facing strip I9, it beingunderstood that grooves similar to the groove 2| may also be formed inthe remaining facing strips, if so desired. These grooves reduce theWeight of the frame and also reduce likelihood of the frame slipping outof a persons hand. In order to support the in a tank 22 of developingfluid, the upper bar I carries upwardiy extending arms 23 whichpreferably converge upwardly although not necessarily so and at theirupper ends carry a crcss bar or yoke 24 which is of greater length thanthe frame and at its ends terminates in depending heads 25 which areadapted to rest upon the ledges 25 of the developing tank and suspendthe frame in the tank. By having the heads hook-shaped to provide bills21, the frames may be suspended from an overhead wire where they willdry after being used.

Having thus described the invention, what is claimed as new is:

1. A carrier for photographic plates and films comprising an open framehaving side and end bars, the side bars and one end bar being formedwith bordering flanges, facing strips secured against the borderingflanges with their inner marginal portions projecting from the flangesand together with inner marginal portions of the side bars and end bardenning a channel about the inner periphery of the frame, the re mainingend bar of the frame and a facing strip disposed opposite thereto beingspaced from each other to provide an entrance for insertion of a plateor film into the frame, ribs extending longitudinally of end portions ofthe last-mentioned end bar and facing strip and tapered longitudinallytoward their inner ends, the ribs being of less width than the side barand facing strip carrying the same and terminating in spaced relation toinner marginal edges thereof whereby the ribs constitute abutments toretain a film or plate in the frame, and means for suspending the framein a developing tank.

2. A carrier for photographic plates and films comprising an open framehaving side and end bars, facing strips carried by the side and end barsand having portions spaced from opposed portions of the frame to form achannel about the inner peripheral edge of the frame to receive marginalportions of a plate or nlm, one end bar of the frame and an opposedfacing strip being spaced from each other for substantially the entirelength of the end bar to provide an entrance, a rib carried by thelast-mentioned end bar and extending longitudinally of one end portionthereof, a rib carried by the opposite end portion of the last-mentionedfacing strip and extending longitudinally thereof, said ribs graduallydecreasing in thickness towards their inner ends and being of less widththan the end bar and facing strip and constituting cams whereby the endbar and facing strip may be sprung away from each other as a plate isslid into the frame, the ribs also serving as abutments for engaging amarginal edge of a plate Within the frame and maintain the plate in theframe, and means for suspending the frame in a `developing tank.

3. A carrier for photograp-l-iic plates and films comprising an openframe having side bars and one end bar formed with marginal seats abouttheir inner peripheries, the other end bar of the frame being formedwith a longitudinally extending slot whereby a plate or film may be slidinto the frame, ribs carried by walls of the slot and constituting camsengageable by a plate to expand the slot during the insertion of aplate, the ribs also constituting abutments for engaging an end of aplate to maintain the plate within the frame, and means for suspendingthe frame in a developing tank.

4. A carrier for photographic plates and films comprising an open frameformed about its inner periphery with a bordering channel to receivemarginal portions of a plate or nlm and support the same in the frame,the frame being formed of yieldable material and at one end having aslot constituting an entrance for insertion and removal of a plate ornlm, abutments in the slots extending from inner faces of opposed wallsof the slot in spaced relation to each other longitudinally thereof andpartially blocking the slot to prevent accidental movement of a plate ornlm out of the frame through the slot, and means for suspending theframe in a developing tank.

5. A carrier for photographic plates and films comprising an open frameformed of yieldable material and having an entrance slot at one end anda bordering channel about its inner periphery constituting a seat formarginal portions of a film or plate, and abutments at the slotted endof the frame partially blocking the slot to pre vent premature movementof a plate or film out of the frame through the slot.

6. A carrier for photographic plates and films comprising an open framehaving an entrance slot at one end and formed with a channel about itsinner periphery constituting a seat for marginal portions of a plate orfilm, walls of the channel being formed with openings tofacilitatecleaning of the channel, and means at the slot* ted end of the frame toprevent premature movement of a plate or film out of the frame throughthe slot.

GEORGE D. PAPPAJION.

